What is the general solution for cos^2(x)+3cos(x)+2=0 ?

The general solution for cos^2(x)+3cos(x)+2=0 is x=pi+2pin

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

cos^2(x)+3cos(x)+2=0

cos^{2} (x) + 3 cos (x) + 2 = 0

x = π + 2 πn

Solution steps

cos^{2} (x) + 3 cos (x) + 2 = 0

Solve by substitution

cos (x) = - 1, cos (x) = - 2

cos (x) = - 1 : x = π + 2 πn

cos (x) = - 2 :

No Solution

Combine all the solutions

x = π + 2 πn

5 tan^{2} (x) + 5 = 10

sin (6 x) + sin (4 x) + sin (2 x) = 0

y, x = sin (2 y)

3 cos (θ) = 3 sin (θ)

sin (x + \frac{π}{3}) + sin (x - \frac{π}{3}) = \frac{3}{2}

What is the general solution for cos^2(x)+3cos(x)+2=0 ?
The general solution for cos^2(x)+3cos(x)+2=0 is x=pi+2pin